几何造型器

几何造型系统是指能够定义、描述、生成几何模型,并能够进行交互编辑处理的系统称为几何造型系统。采用几何造型技术,可以将物体的形状及其各种属性存储在计算机内,形成该物体的几何模型。这样的几何模型是对原物体确切的数学表达,或对其某种状态的真实模拟。
The Installation and Compilation of OpenCASCADE-卡核

The Installation and Compilation of OpenCASCADE

OpenCASCADE的编译  The Installation and Compilation of OpenCASCADE eryar@163.com   一、 安装OpenCASCADE 可以从OpenCASCADE的官网上下载其安装...
清华笔记:计算共形几何讲义 (12)极值长度-卡核

清华笔记:计算共形几何讲义 (12)极值长度

图1. 圆柱面的共形模。拓扑等价的度量曲面是否共形等价,亦即拓扑同胚的带有黎曼度量的曲面间是否存在保角双射,这是一个微妙的问题。几何上,我们需要寻找共形变换下的全系不变量,通过比较不...
OpenCASCADE JT Assistant-卡核

OpenCASCADE JT Assistant

OpenCASCADE JT Assistant eryar@163.com Abstract. Siemens’ JT data format accepted as the world’s first ISO international standard for viewing and sharing lightweight 3D product i...
OpenCASCADE Trihedron Law-卡核

OpenCASCADE Trihedron Law

OpenCASCADE Trihedron Law eryar@163.com Abstract. In differential geometry the Frenet-Serret formulas describe the kinematic properties of a particle moving along a continuous, dif...
Topology Shapes of OpenCascade BRep-卡核

Topology Shapes of OpenCascade BRep

Topology Shapes of OpenCascade BRep eryar@163.com 摘要Abstract:通过对OpenCascade中的BRep数据的读写,理解边界表示法的概念及实现。理解了拓朴形状的数据结构,就对ModelingData模块有了...
OpenCASCADE Camera-卡核

OpenCASCADE Camera

OpenCASCADE Camera eryar@163.com Abstract. OpenCASCADE introduce a new class Graphic3d_Camera for the Visualization module. The camera class provides object-oriented approach to se...
Bounding Volume Hierarchy BVH in OpenCASCADE-卡核

Bounding Volume Hierarchy BVH in OpenCASCADE

Bounding Volume Hierarchy BVH in OpenCASCADE eryar@163.com Abstract. Bounding Volume Hierarchy(BVH) organizes geometric objects in the tree based on spatial relationships. Each nod...
Tcl internal variables-卡核

Tcl internal variables

Tcl internal variables eryar@163.com 在Tcl中内置了一些变量,并赋予了一定的功能。内置变量列表如下: 变量名称 功能描述 argc 指命令行参数的个数。 argv  指包含命令行参数的列表。&n...
ModelDataExchange - Import-卡核

ModelDataExchange – Import

ModelDataExchange - Import eryar@163.com Abstract. The ModelDataExchange import utility enables the user to import geometric models of equipment into 3D models within Design. The i...
管道设计CAD系统中重量重心计算-卡核

管道设计CAD系统中重量重心计算

管道设计CAD系统中重量重心计算 eryar@163.com Abstract. 管道设计CAD系统中都有涉及到重量重心计算的功能,这个功能得到的重心数据主要用于托盘式造船时方便根据重心设置吊装配件。重量信息主...
OpenCASCADE Face Normals-卡核

OpenCASCADE Face Normals

OpenCASCADE Face Normals eryar@163.com   Abstract. 要显示一个逼真的三维模型,其顶点坐标、顶点法向、纹理坐标这三个信息必不可少。本文主要介绍如何在OpenCASCADE的Draw中显示出曲面...
PDMS RvmTranslator-卡核

PDMS RvmTranslator

PDMS RvmTranslator eryar@163.com Abstract. AVEVA Review is used for 3D model visualisation for plant or ship design, construction and operation. The RVM file is main input of AVEVA...